Diaphragm seal with flange connection

Name: Diaphragm seal with flange connection
Brand: WIKA

With internal diaphragm, threaded design

EACCRNMTSCHS

Price

On request

Depends on configuration

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Description

Diaphragm seals are used for the protection of pressure measuring instruments in applications with difficult media. In diaphragm seal systems, the diaphragm of the diaphragm seal effects the separation of the instrument and the medium. The pressure is transmitted to the measuring instrument via the system fill fluid which is inside the diaphragm seal system.

For the implementation of demanding customer applications, there are a wide variety of designs, materials and system fill fluids available.

For further technical information on diaphragm seals and diaphragm seal systems see IN 00.06 'Application, operating principle, designs'.

The model 990.12 diaphragm seal is ideally suited for applications with small process connections. Due to the internal diaphragm low measuring ranges can be realised.

Diaphragm seal with flange connection, model 990.12

The large diameter of the diaphragm effects a low deviation at the measuring instrument when the temperature changes. By means of optionally available flushing connections, the process side of the flange can be cleaned and flushed as required.

Assembly of the diaphragm seal to the measuring instrument may be made via a direct connection, for high temperatures via a cooling element or via a flexible capillary.

For the material selection WIKA offers a variety of solutions, in which the upper body of the diaphragm seal and the wetted parts can be made of identical or different materials. The wetted parts can, as an alternative, be coated.

Special features

Flange with internal welded diaphragm
Mounting to measuring instruments for low pressures, also for differential pressure
Flushing connections optionally available

Identification

Model	990.12
Product family	990
Subcategory	Diaphragm seal

Process conditions

Process connection	DN 15DN 20DN 25DN 40½"¾"1"1 ½"G1/41/4NPTG1/81/8NPTG1/21/2NPTM12M16M20
Process temperature	−200…+400 °C

Materials

Case material	Stainless steel 1.4404 (316L), Stainless steel 1.4435 (316L), Stainless steel 1.4539 (904L), Stainless steel 1.4541 (321), Stainless steel 1.4571 (316Ti), Duplex 2205 (1.4462), Superduplex (1.4410), Hastelloy C22 (2.4602), Hastelloy C276 (2.4819), Inconel 600 (2.4816), Inconel 625 (2.4856), Incoloy 825 (2.4858), Monel 400 (2.4360), Nickel 200 (2.4060, 2.4066), Titanium grade 2 (3.7035), Titanium grade 7 (3.7235)
Wetted parts material	Stainless steel 1.4404 (316L), Stainless steel 1.4539 (904L), Stainless steel 1.4541 (321), Stainless steel 1.4571 (316Ti), ECTFE coating, Gold plating, Wikaramic® coating, PFA (perfluoroalkoxy) coating, Hastelloy C22 (2.4602), Hastelloy C276 (2.4819), Inconel 600 (2.4816), Inconel 625 (2.4856), Incoloy 825 (2.4858), Monel 400 (2.4360), Nickel 200 (2.4060, 2.4066), Titanium class 2 (3.7035), Titanium grade 2 (3.7035), Titanium grade 7 (3.7235), Titanium grade 11 (3.7225), Duplex 2205 (1.4462), Superduplex (1.4410), Stainless steel 1.4435 (316L)
Sealing material	FPM, PTFE, Metal C snap ring

Certifications and approvals

Certifications

EACCRNMTSCHS

Additional details

Datasheet languages

Tables from datasheet

Model 990.12	Standard	Option
Level of cleanliness of wetted parts	Oil and grease free per ASTM G93-03 level FWIKA standard (< 1,000 mg/m²)	Oil and grease free per ASTM G93-03 level D and ISO 15001 (< 220 mg/m²)
Origin of wetted parts	International	EU, CH, USA
Sealing	■ FPM, max. 200 °C [392 °F] ■ PTFE, max. 260 °C [500 °F]	Metal C snap ring, max. 400 °C [752 °F]
Flushing connection	-	■ Single flushing connection (G ¼, G⅛, ¼NPT, ⅛NPT) ■ Dual flushing connection (G ¼, G⅛, ¼NPT, ⅛NPT) ■ Plug screws
Connection to the measuring instrument	Axial adapter	Axial adapter with G½, G¼, ½NPTor ¼NPT(female)
Type of mounting	Direct mounting	■ Capillary ■ Cooling element
Retainer parts	Stainless steel	-
Design per NACE	-	■ MR0175 ■ MR0103
Vacuum service (see IN 00.25)	Basic service	■ Premium service ■ Advanced service
Instrument mounting bracket (only for capillary option)	-	■ Form H per DIN 16281, 100 mm, aluminium, black ■ Form H per DIN 16281, 100 mm, stainless steel ■ Bracket for pipe mounting, for pipe Ø20 ... 80 mm, steel (see data sheet AC 09.07)

Standard	Nominal width	Sealing face
		Standard	Option
Following DIN EN 1092-1	DN 15 DN 20 DN 25	Form B1	Form B2 Groove and tongue Spigot and recess
DN 40
Following ASME B16.5	½" ¾"	RF 125 ... 250 AA	RF 125 ... 500 AA RFSF Flat face Ring groove form RJF
1"
1 ½ "

Upper body of diaphragm seal	Wetted parts	Maximum permissible process
Lower body of diaphragm seal ¹⁾	Diaphragm	temperature ²⁾ in °C [°F]
Stainless steel 1.4404 (316L)	Stainless steel 1.4404 (316L)	Stainless steel 1.4404 / 1.4435 (316L), standard version	400 [752]
Stainless steel 1.4539 (904L)	Stainless steel 1.4539 (904L)
Stainless steel 1.4541 (321)	Stainless steel 1.4541 (321)
Stainless steel 1.4571 (316Ti)	Stainless steel 1.4571 (316Ti)
ECTFE coating	ECTFE coating	150 [302]
PFA (perfluoroalkoxy) coating, FDA	PFA (perfluoroalkoxy) coating, FDA	260 [500]
PFA (perfluoroalkoxy) coating, antistatic	PFA (perfluoroalkoxy) coating, antistatic
Stainless steel 1.4404 (316L)	Gold plating	400 [752]
Stainless steel 1.4404 (316L)	Wikaramic® coating
Hastelloy C22 (2.4602)	Hastelloy C22 (2.4602)	260 [500]
Hastelloy C276 (2.4819)	Hastelloy C276 (2.4819)	400 [752]
Inconel 600 (2.4816)	Inconel 600 (2.4816)
Inconel 625 (2.4856)	Inconel 625 (2.4856)
Incoloy 825 (2.4858)	Incoloy 825 (2.4858)
Monel 400 (2.4360)	Monel 400 (2.4360)
Nickel 200 (2.4060, 2.4066)	Nickel 200 (2.4060, 2.4066)	260 [500]
Titanium class 2 (3.7035)	Titanium class 2 (3.7035)	150 [302]
Titanium grade 2 (3.7035)	Titanium grade 2 (3.7035)
Titanium grade 7 (3.7235)	Titanium grade 11 (3.7225)	300 [572]
Stainless steel 1.4435 (316L)	Stainless steel 1.4435 (316L)	Stainless steel 1.4435 (316L)	400 [752]
Stainless steel 1.4539 (904L)	Stainless steel 1.4539 (904L)	Stainless steel 1.4539 (904L)
Stainless steel 1.4541 (321)	Stainless steel 1.4541 (321)	Stainless steel 1.4541 (321)
Stainless steel 1.4571 (316Ti)	Stainless steel 1.4571 (316Ti)	Stainless steel 1.4571 (316Ti)
Duplex 2205 (1.4462)	Duplex 2205 (1.4462)	Duplex 2205 (1.4462)	300 [572]
Superduplex (1.4410)	Superduplex (1.4410)	Superduplex (1.4410)
Hastelloy C22 (2.4602)	Hastelloy C22 (2.4602)	Hastelloy C22 (2.4602)	400 [752]
Hastelloy C276 (2.4819)	Hastelloy C276 (2.4819)	Hastelloy C276 (2.4819)
Inconel 600 (2.4816)	Inconel 600 (2.4816)	Inconel 600 (2.4816)
Inconel 625 (2.4856)	Inconel 625 (2.4856)	Inconel 625 (2.4856)
Incoloy 825 (2.4558)	Incoloy 825 (2.4858)	Incoloy 825 (2.4858)
Monel 400 (2.4360)	Monel 400 (2.4360)	Monel 400 (2.4360)
Nickel 200 (2.4060, 2.4066)	Nickel 200 (2.4060, 2.4066)	Nickel 200 (2.4060, 2.4066)
Titanium grade 2 (3.7035)	Titanium grade 2 (3.7035)	Titanium grade 2 (3.7035)
Titanium grade 7 (3.7235)	Titanium grade 7 (3.7235)	Titanium grade 11 (3.7225)

Logo	Description	Country
	EAC (option) Pressure equipment directive	Eurasian Economic Community
-	CRN Safety (e.g. electr. safety, overpressure, ...)	Canada
-	MTSCHS (option) Permission for commissioning	Kazakhstan

View all (9)

DN	Class	Dimensions in mm[in]	G 1	Weight in kg [lbs]
Mb	D	b	d 4	f	k
½"	150	52 [2.047]	95 [3.74]	28 [1.102]	34.9 [1.374]	2 [0.079]	60.3 [2.374]	½" UNC	1.6 [3.5]
300						66.7 [2.626]
600			32 [1.26]		7 [0.276]			1.8 [4]
1500		120 [4.724]	40 [1.575]			82.6 [3.252]	¾" UNC	3.6 [8]
¾"	150		100 [3.937]	28 [1.102]	42.9 [1.689]	2 [0.079]	69.9 [2.752]	½" UNC	1.7 [3.7]
300		115 [4.528]	25 [0.984]			82.6 [3.252]	⅝" UNC	1.9 [4.2]
600			25 [0.894]		7 [0.276]			2.2 [4.8]
1500		130 [5.118]	32.4 [1.276]			88.9 [3.5]	¾ " UNC	3.3 [7.3]
1"	150		110 [4.331]	22 [0.866]	50.8 [2]	2 [0.079]	79.4 [3.13]	½ " UNC	1.6 [3.5]
300		125 [4.921]				88.9 [3.5]	⅝ " UNC	2.0 [4.4]
600			24.5 [0.965]		7 [0.276]			2.3 [5]
1500		150 [5.905]	36 [1.417]			101.6 [4]	⅞" UNC	4.8 [10.5]

DN	PN	Dimensions in mm[in]	G 1	Weight in kg [lbs]
		Mb	D	b	d 4	f	k
15	10/40	52 [2,047]	95 [3.74]	28 [1.102]	45 [1.772]	2 [0.079]	65 [2.559]	M12	1.6 [3.5]
	63/100		105 [4.134]	25 [0.984]			75 [2.953]	M12	2.0 [4.4]
	160							M12	2.1 [4.6]
	250		130 [5.118]	26 [1.024]			90 [3.543]	M16	3.2 [7]
20	10/40		105 [4.134]	25 [0.984]	58 [2.283]		75 [2.953]	M12	1.9 [4.2]
25	10/40		115 [4.528]	22 [0.866]	68 [2.677]		85 [3.346]	M12	2.1 [4.6]
	63/100		140 [5.512]	24 [0.945]			100 [3.937]	M16	3.2 [7]
	160			28 [1.102]				M16	3.6 [8]
	250		150 [5.905]				105 [4.134]	M20	4.0 [8.8]

Material	Unified numbering system (UNS)
Stainless steel 316L (1.4404 or 1.4435)	S31603
Stainless steel 904L (1.4539)	N08904
Stainless steel 321 (1.4541)	S32100
Stainless steel 316Ti (1.4571)	S31635
Stainless steel 1.4466 (urea grade)	S31050
Duplex 2205 (1.4462)	S31803
Superduplex 1.4410	S32750
Tantalum (also lining)	R05200
Hastelloy C276 (2.4819)	N01276
Hastelloy C22 (2.4602)	N06022
Inconel 600 (2.4816)	N06600
Incoloy 825 (2.4858)	N08825
Inconel 625 (2.485)	N06625
Monel 400 (2.4360)	N04400
Nickel 200 (2.4066)	N02200
Nickel 201 (2.4068)	N02201
Titanium 3.7035 (class 2)	R50400
Titanium 3.7235 (class 7)	R52400
Zirconium GR702	R60702

Designation	Identi- fication number	Solidi- fication point	Boiling/ degradation point	Density at 25 °C	Kin.Viscosity at 25 °C	Remark
KN	°C	°C	g/cm³	cSt
Silicone oil	2	-45	+300	0.96	54.5	Universal application
Glycerine	7	-35	+240	1.26	759.6	FDA 21 CFR 182.1320
Silicone oil	17	-90	+200	0.92	4.4	Low temperatures
Halocarbon	21	-60	+175	1.89	10.6	Oxygen 1) and chlorine
Methylcyclopentane	30	-130	+60	0.74	0.7	For very low temperatures
High-temperature silicone oil	32	-25	+400	1.06	47.1	For high temperatures
Neobee® M-20	59	-35	+260	0.92	10.0	FDA 21 CFR 172.856, 21 CFR 174.5
DI water	64	+4	+85	1.00	0.9	For ultrapure media
Silicone oil	68	-75	+250	0.93	10.3
DI water/propanol mixture	75	-30	+60	0.92	3.6	For ultrapure media
Medicinal white mineral oil	92	-15	+260	0.85	45.3	FDA 21 CFR 172.878, 21 CFR 178.3620(a); USP, EP, SP

Maximum temperature	Maximum oxygen pressure
to 60 °C	50 bar
> 60 °C to 100 °C	30 bar
> 100 °C to 175 °C	25 bar